/*    minIni - Multi-Platform INI file parser, suitable for embedded systems
 *
 *    These routines are in part based on the article "Multiplatform .INI Files"
 *    by Joseph J. Graf in the March 1994 issue of Dr. Dobb's Journal.
 *
 *    Copyright (c) CompuPhase, 2008-2012
 *
 *    Licensed under the Apache License, Version 2.0 (the "License"); you may not
 *    use this file except in compliance with the License. You may obtain a copy
 *    of the License at
 *
 *            http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 *    License for the specific language governing permissions and limitations
 *    under the License.
 *
 *    Version: $Id: minIni.c 45 2012-05-14 11:53:09Z thiadmer.riemersma $
 */

#if (defined _UNICODE || defined __UNICODE__ || defined UNICODE) && !defined MININI_ANSI
# if !defined UNICODE     /* for Windows */
#     define UNICODE
# endif
# if !defined _UNICODE    /* for C library */
#     define _UNICODE
# endif
#endif

#define MININI_IMPLEMENTATION
#include "minIni.h"
#if defined NDEBUG
    #define assert(e)
#else
    #include <assert.h>
#endif

#if !defined __T
    #include <ctype.h>
    #include <string.h>
    #include <stdlib.h>
    #define TCHAR         char
    #define __T(s)        s
    #define _tcscat     strcat
    #define _tcschr     strchr
    #define _tcscmp     strcmp
    #define _tcscpy     strcpy
    #define _tcsicmp    stricmp
    #define _tcslen     strlen
    #define _tcsncmp    strncmp
    #define _tcsnicmp strnicmp
    #define _tcsrchr    strrchr
    #define _tcstol     strtol
    #define _tcstod     strtod
    #define _totupper toupper
    #define _stprintf sprintf
    #define _tfgets     fgets
    #define _tfputs     fputs
    #define _tfopen     fopen
    #define _tremove    remove
    #define _trename    rename
#endif

#if defined __linux || defined __linux__
    #define __LINUX__
#elif defined FREEBSD && !defined __FreeBSD__
    #define __FreeBSD__
#elif defined(_MSC_VER)
    #pragma warning(disable: 4996)	/* for Microsoft Visual C/C++ */
#endif
#if !defined strnicmp && !defined PORTABLE_STRNICMP
    #if defined __LINUX__ || defined __FreeBSD__ || defined __OpenBSD__ || defined __APPLE__
        #define strnicmp    strncasecmp
    #endif
#endif

#if !defined INI_LINETERM
    #define INI_LINETERM        __T("\n")
#endif
#if !defined INI_FILETYPE
    #error Missing definition for INI_FILETYPE.
#endif

#if !defined sizearray
    #define sizearray(a)        (sizeof(a) / sizeof((a)[0]))
#endif

enum quote_option {
    QUOTE_NONE,
    QUOTE_ENQUOTE,
    QUOTE_DEQUOTE,
};

#if defined PORTABLE_STRNICMP
int strnicmp(const TCHAR *s1, const TCHAR *s2, size_t n)
{
    register int c1, c2;

    while (n-- != 0 && (*s1 || *s2)) {
        c1 = *s1++;
        if ('a' <= c1 && c1 <= 'z')
            c1 += ('A' - 'a');
        c2 = *s2++;
        if ('a' <= c2 && c2 <= 'z')
            c2 += ('A' - 'a');
        if (c1 != c2)
            return c1 - c2;
    } /* while */
    return 0;
}
#endif /* PORTABLE_STRNICMP */

static TCHAR *skipleading(const TCHAR *str)
{
    assert(str != NULL);
    while (*str != '\0' && *str <= ' ')
        str++;
    return (TCHAR *)str;
}

static TCHAR *skiptrailing(const TCHAR *str, const TCHAR *base)
{
    assert(str != NULL);
    assert(base != NULL);
    while (str > base && *(str-1) <= ' ')
        str--;
    return (TCHAR *)str;
}

static TCHAR *striptrailing(TCHAR *str)
{
    TCHAR *ptr = skiptrailing(_tcschr(str, '\0'), str);
    assert(ptr != NULL);
    *ptr = '\0';
    return str;
}

static TCHAR *save_strncpy(TCHAR *dest, const TCHAR *source, size_t maxlen, enum quote_option option)
{
    size_t d, s;

    assert(maxlen>0);
    assert(dest <= source || dest >= source + maxlen);
    if (option == QUOTE_ENQUOTE && maxlen < 3)
        option = QUOTE_NONE;    /* cannot store two quotes and a terminating zero in less than 3 characters */

    switch (option) {
    case QUOTE_NONE:
        for (d = 0; d < maxlen - 1 && source[d] != '\0'; d++)
            dest[d] = source[d];
        assert(d < maxlen);
        dest[d] = '\0';
        break;
    case QUOTE_ENQUOTE:
        d = 0;
        dest[d++] = '"';
        for (s = 0; source[s] != '\0' && d < maxlen - 2; s++, d++) {
            if (source[s] == '"') {
                if (d >= maxlen - 3)
                    break;    /* no space to store the escape character plus the one that follows it */
                dest[d++] = '\\';
            } /* if */
            dest[d] = source[s];
        } /* for */
        dest[d++] = '"';
        dest[d] = '\0';
        break;
    case QUOTE_DEQUOTE:
        for (d = s = 0; source[s] != '\0' && d < maxlen - 1; s++, d++) {
            if ((source[s] == '"' || source[s] == '\\') && source[s + 1] == '"')
                s++;
            dest[d] = source[s];
        } /* for */
        dest[d] = '\0';
        break;
    default:
        assert(0);
    } /* switch */

    return dest;
}

static TCHAR *cleanstring(TCHAR *string, enum quote_option *quotes)
{
    int isstring;
    TCHAR *ep;

    assert(string != NULL);
    assert(quotes != NULL);

    /* Remove a trailing comment */
    isstring = 0;
    for (ep = string; *ep != '\0' && ((*ep != ';' && *ep != '#') || isstring); ep++) {
        if (*ep == '"') {
            if (*(ep + 1) == '"')
                ep++;                                 /* skip "" (both quotes) */
            else
                isstring = !isstring; /* single quote, toggle isstring */
        } else if (*ep == '\\' && *(ep + 1) == '"') {
            ep++;                                     /* skip \" (both quotes */
        } /* if */
    } /* for */
    assert(ep != NULL && (*ep == '\0' || *ep == ';' || *ep == '#'));
    *ep = '\0';                                 /* terminate at a comment */
    striptrailing(string);
    /* Remove double quotes surrounding a value */
    *quotes = QUOTE_NONE;
    if (*string == '"' && (ep = _tcschr(string, '\0')) != NULL && *(ep - 1) == '"') {
        string++;
        *--ep = '\0';
        *quotes = QUOTE_DEQUOTE;    /* this is a string, so remove escaped characters */
    } /* if */
    return string;
}

static int getkeystring(INI_FILETYPE *fp, const TCHAR *Section, const TCHAR *Key,
                                                int idxSection, int idxKey, TCHAR *Buffer, int BufferSize)
{
    TCHAR *sp, *ep;
    int len, idx;
    enum quote_option quotes;
    TCHAR LocalBuffer[INI_BUFFERSIZE];

    assert(fp != NULL);
    /* Move through file 1 line at a time until a section is matched or EOF. If
     * parameter Section is NULL, only look at keys above the first section. If
     * idxSection is postive, copy the relevant section name.
     */
    len = (Section != NULL) ? _tcslen(Section) : 0;
    if (len > 0 || idxSection >= 0) {
        idx = -1;
        do {
            if (!ini_read(LocalBuffer, INI_BUFFERSIZE, fp))
                return 0;
            sp = skipleading(LocalBuffer);
            ep = _tcschr(sp, ']');
        } while (*sp != '[' || ep == NULL || (((int)(ep-sp-1) != len || _tcsnicmp(sp+1,Section,len) != 0) && ++idx != idxSection));
        if (idxSection >= 0) {
            if (idx == idxSection) {
                assert(ep != NULL);
                assert(*ep == ']');
                *ep = '\0';
                save_strncpy(Buffer, sp + 1, BufferSize, QUOTE_NONE);
                return 1;
            } /* if */
            return 0; /* no more section found */
        } /* if */
    } /* if */

    /* Now that the section has been found, find the entry.
     * Stop searching upon leaving the section's area.
     */
    assert(Key != NULL || idxKey >= 0);
    len = (Key != NULL) ? (int)_tcslen(Key) : 0;
    idx = -1;
    do {
        if (!ini_read(LocalBuffer,INI_BUFFERSIZE,fp) || *(sp = skipleading(LocalBuffer)) == '[')
            return 0;
        sp = skipleading(LocalBuffer);
        ep = _tcschr(sp, '='); /* Parse out the equal sign */
        if (ep == NULL)
            ep = _tcschr(sp, ':');
    } while (*sp == ';' || *sp == '#' || ep == NULL || (((int)(skiptrailing(ep,sp)-sp) != len || _tcsnicmp(sp,Key,len) != 0) && ++idx != idxKey));
    if (idxKey >= 0) {
        if (idx == idxKey) {
            assert(ep != NULL);
            assert(*ep == '=' || *ep == ':');
            *ep = '\0';
            striptrailing(sp);
            save_strncpy(Buffer, sp, BufferSize, QUOTE_NONE);
            return 1;
        } /* if */
        return 0;     /* no more key found (in this section) */
    } /* if */

    /* Copy up to BufferSize chars to buffer */
    assert(ep != NULL);
    assert(*ep == '=' || *ep == ':');
    sp = skipleading(ep + 1);
    sp = cleanstring(sp, &quotes);    /* Remove a trailing comment */
    save_strncpy(Buffer, sp, BufferSize, quotes);
    return 1;
}

/** ini_gets()
 * \param Section         the name of the section to search for
 * \param Key                 the name of the entry to find the value of
 * \param DefValue        default string in the event of a failed read
 * \param Buffer            a pointer to the buffer to copy into
 * \param BufferSize    the maximum number of characters to copy
 * \param Filename        the name and full path of the .ini file to read from
 *
 * \return                        the number of characters copied into the supplied buffer
 */
int ini_gets(const TCHAR *Section, const TCHAR *Key, const TCHAR *DefValue,
                         TCHAR *Buffer, int BufferSize, const TCHAR *Filename)
{
    INI_FILETYPE fp;
    int ok = 0;

    if (Buffer == NULL || BufferSize <= 0 || Key == NULL)
        return 0;
    if (ini_openread(Filename, &fp)) {
        ok = getkeystring(&fp, Section, Key, -1, -1, Buffer, BufferSize);
        (void)ini_close(&fp);
    } /* if */
    if (!ok)
        save_strncpy(Buffer, DefValue, BufferSize, QUOTE_NONE);
    return _tcslen(Buffer);
}

/** ini_getl()
 * \param Section         the name of the section to search for
 * \param Key                 the name of the entry to find the value of
 * \param DefValue        the default value in the event of a failed read
 * \param Filename        the name of the .ini file to read from
 *
 * \return                        the value located at Key
 */
long ini_getl(const TCHAR *Section, const TCHAR *Key, long DefValue, const TCHAR *Filename)
{
    TCHAR LocalBuffer[64];
    int len = ini_gets(Section, Key, __T(""), LocalBuffer, sizearray(LocalBuffer), Filename);
    return (len == 0) ? DefValue
                                        : ((len >= 2 && _totupper(LocalBuffer[1]) == 'X') ? _tcstol(LocalBuffer, NULL, 16)
                                                                                                                                            : _tcstol(LocalBuffer, NULL, 10));
}

#if defined INI_REAL
/** ini_getf()
 * \param Section         the name of the section to search for
 * \param Key                 the name of the entry to find the value of
 * \param DefValue        the default value in the event of a failed read
 * \param Filename        the name of the .ini file to read from
 *
 * \return                        the value located at Key
 */
INI_REAL ini_getf(const TCHAR *Section, const TCHAR *Key, INI_REAL DefValue, const TCHAR *Filename)
{
    TCHAR LocalBuffer[64];
    int len = ini_gets(Section, Key, __T(""), LocalBuffer, sizearray(LocalBuffer), Filename);
    return (len == 0) ? DefValue : ini_atof(LocalBuffer);
}
#endif

/** ini_getbool()
 * \param Section         the name of the section to search for
 * \param Key                 the name of the entry to find the value of
 * \param DefValue        default value in the event of a failed read; it should
 *                                        zero (0) or one (1).
 * \param Buffer            a pointer to the buffer to copy into
 * \param BufferSize    the maximum number of characters to copy
 * \param Filename        the name and full path of the .ini file to read from
 *
 * A true boolean is found if one of the following is matched:
 * - A string starting with 'y' or 'Y'
 * - A string starting with 't' or 'T'
 * - A string starting with '1'
 *
 * A false boolean is found if one of the following is matched:
 * - A string starting with 'n' or 'N'
 * - A string starting with 'f' or 'F'
 * - A string starting with '0'
 *
 * \return                        the true/false flag as interpreted at Key
 */
int ini_getbool(const TCHAR *Section, const TCHAR *Key, int DefValue, const TCHAR *Filename)
{
    TCHAR LocalBuffer[2];
    int ret;

    ini_gets(Section, Key, __T(""), LocalBuffer, sizearray(LocalBuffer), Filename);
    LocalBuffer[0] = (TCHAR)toupper(LocalBuffer[0]);
    if (LocalBuffer[0] == 'Y' || LocalBuffer[0] == '1' || LocalBuffer[0] == 'T')
        ret = 1;
    else if (LocalBuffer[0] == 'N' || LocalBuffer[0] == '0' || LocalBuffer[0] == 'F')
        ret = 0;
    else
        ret = DefValue;

    return(ret);
}

/** ini_getsection()
 * \param idx                 the zero-based sequence number of the section to return
 * \param Buffer            a pointer to the buffer to copy into
 * \param BufferSize    the maximum number of characters to copy
 * \param Filename        the name and full path of the .ini file to read from
 *
 * \return                        the number of characters copied into the supplied buffer
 */
int    ini_getsection(int idx, TCHAR *Buffer, int BufferSize, const TCHAR *Filename)
{
    INI_FILETYPE fp;
    int ok = 0;

    if (Buffer == NULL || BufferSize <= 0 || idx < 0)
        return 0;
    if (ini_openread(Filename, &fp)) {
        ok = getkeystring(&fp, NULL, NULL, idx, -1, Buffer, BufferSize);
        (void)ini_close(&fp);
    } /* if */
    if (!ok)
        *Buffer = '\0';
    return _tcslen(Buffer);
}

/** ini_getkey()
 * \param Section         the name of the section to browse through, or NULL to
 *                                        browse through the keys outside any section
 * \param idx                 the zero-based sequence number of the key to return
 * \param Buffer            a pointer to the buffer to copy into
 * \param BufferSize    the maximum number of characters to copy
 * \param Filename        the name and full path of the .ini file to read from
 *
 * \return                        the number of characters copied into the supplied buffer
 */
int    ini_getkey(const TCHAR *Section, int idx, TCHAR *Buffer, int BufferSize, const TCHAR *Filename)
{
    INI_FILETYPE fp;
    int ok = 0;

    if (Buffer == NULL || BufferSize <= 0 || idx < 0)
        return 0;
    if (ini_openread(Filename, &fp)) {
        ok = getkeystring(&fp, Section, NULL, -1, idx, Buffer, BufferSize);
        (void)ini_close(&fp);
    } /* if */
    if (!ok)
        *Buffer = '\0';
    return _tcslen(Buffer);
}


#if !defined INI_NOBROWSE
/** ini_browse()
 * \param Callback        a pointer to a function that will be called for every
 *                                        setting in the INI file.
 * \param UserData        arbitrary data, which the function passes on the the
 *                                        \c Callback function
 * \param Filename        the name and full path of the .ini file to read from
 *
 * \return                        1 on success, 0 on failure (INI file not found)
 *
 * \note                            The \c Callback function must return 1 to continue
 *                                        browsing through the INI file, or 0 to stop. Even when the
 *                                        callback stops the browsing, this function will return 1
 *                                        (for success).
 */
int    ini_browse(INI_CALLBACK Callback, const void *UserData, const TCHAR *Filename)
{
    TCHAR LocalBuffer[INI_BUFFERSIZE];
    TCHAR *sp, *ep;
    int lenSec, lenKey;
    enum quote_option quotes;
    INI_FILETYPE fp;

    if (Callback == NULL)
        return 0;
    if (!ini_openread(Filename, &fp))
        return 0;

    LocalBuffer[0] = '\0';     /* copy an empty section in the buffer */
    lenSec = _tcslen(LocalBuffer) + 1;
    for ( ;; ) {
        if (!ini_read(LocalBuffer + lenSec, INI_BUFFERSIZE - lenSec, &fp))
            break;
        sp = skipleading(LocalBuffer + lenSec);
        /* ignore empty strings and comments */
        if (*sp == '\0' || *sp == ';' || *sp == '#')
            continue;
        /* see whether we reached a new section */
        ep = _tcschr(sp, ']');
        if (*sp == '[' && ep != NULL) {
            *ep = '\0';
            save_strncpy(LocalBuffer, sp + 1, INI_BUFFERSIZE, QUOTE_NONE);
            lenSec = _tcslen(LocalBuffer) + 1;
            continue;
        } /* if */
        /* not a new section, test for a key/value pair */
        ep = _tcschr(sp, '=');        /* test for the equal sign or colon */
        if (ep == NULL)
            ep = _tcschr(sp, ':');
        if (ep == NULL)
            continue;                             /* invalid line, ignore */
        *ep++ = '\0';                         /* split the key from the value */
        striptrailing(sp);
        save_strncpy(LocalBuffer + lenSec, sp, INI_BUFFERSIZE - lenSec, QUOTE_NONE);
        lenKey = _tcslen(LocalBuffer + lenSec) + 1;
        /* clean up the value */
        sp = skipleading(ep);
        sp = cleanstring(sp, &quotes);    /* Remove a trailing comment */
        save_strncpy(LocalBuffer + lenSec + lenKey, sp, INI_BUFFERSIZE - lenSec - lenKey, quotes);
        /* call the callback */
        if (!Callback(LocalBuffer, LocalBuffer + lenSec, LocalBuffer + lenSec + lenKey, UserData))
            break;
    } /* for */

    (void)ini_close(&fp);
    return 1;
}
#endif /* INI_NOBROWSE */

#if ! defined INI_READONLY
static void ini_tempname(TCHAR *dest, const TCHAR *source, int maxlength)
{
    TCHAR *p;

    save_strncpy(dest, source, maxlength, QUOTE_NONE);
    p = _tcsrchr(dest, '\0');
    assert(p != NULL);
    *(p - 1) = '~';
}

static enum quote_option check_enquote(const TCHAR *Value)
{
    const TCHAR *p;

    /* run through the value, if it has trailing spaces, or '"', ';' or '#'
     * characters, enquote it
     */
    assert(Value != NULL);
    for (p = Value; *p != '\0' && *p != '"' && *p != ';' && *p != '#'; p++)
        /* nothing */;
    return (*p != '\0' || (p > Value && *(p - 1) == ' ')) ? QUOTE_ENQUOTE : QUOTE_NONE;
}

static void writesection(TCHAR *LocalBuffer, const TCHAR *Section, INI_FILETYPE *fp)
{
    TCHAR *p;

    if (Section != NULL && _tcslen(Section) > 0) {
        LocalBuffer[0] = '[';
        save_strncpy(LocalBuffer + 1, Section, INI_BUFFERSIZE - 4, QUOTE_NONE);    /* -1 for '[', -1 for ']', -2 for '\r\n' */
        p = _tcsrchr(LocalBuffer, '\0');
        assert(p != NULL);
        *p++ = ']';
        _tcscpy(p, INI_LINETERM); /* copy line terminator (typically "\n") */
        (void)ini_write(LocalBuffer, fp);
    } /* if */
}

static void writekey(TCHAR *LocalBuffer, const TCHAR *Key, const TCHAR *Value, INI_FILETYPE *fp)
{
    TCHAR *p;
    enum quote_option option = check_enquote(Value);
    save_strncpy(LocalBuffer, Key, INI_BUFFERSIZE - 3, QUOTE_NONE);    /* -1 for '=', -2 for '\r\n' */
    p = _tcsrchr(LocalBuffer, '\0');
    assert(p != NULL);
    *p++ = '=';
    save_strncpy(p, Value, INI_BUFFERSIZE - (p - LocalBuffer) - 2, option); /* -2 for '\r\n' */
    p = _tcsrchr(LocalBuffer, '\0');
    assert(p != NULL);
    _tcscpy(p, INI_LINETERM); /* copy line terminator (typically "\n") */
    (void)ini_write(LocalBuffer, fp);
}

static int cache_accum(const TCHAR *string, int *size, int max)
{
    int len = _tcslen(string);
    if (*size + len >= max)
        return 0;
    *size += len;
    return 1;
}

static int cache_flush(TCHAR *buffer, int *size,
                                            INI_FILETYPE *rfp, INI_FILETYPE *wfp, INI_FILEPOS *mark)
{
    int pos = 0;

    (void)ini_seek(rfp, mark);
    assert(buffer != NULL);
    buffer[0] = '\0';
    assert(size != NULL);
    while (pos < *size) {
        (void)ini_read(buffer + pos, INI_BUFFERSIZE - pos, rfp);
        pos += _tcslen(buffer + pos);
        assert(pos <= *size);
    } /* while */
    if (buffer[0] != '\0')
        (void)ini_write(buffer, wfp);
    (void)ini_tell(rfp, mark);    /* update mark */
    *size = 0;
    /* return whether the buffer ended with a line termination */
    return (_tcscmp(buffer + pos - _tcslen(INI_LINETERM), INI_LINETERM) == 0);
}

static int close_rename(INI_FILETYPE *rfp, INI_FILETYPE *wfp, const TCHAR *filename, TCHAR *buffer)
{
    (void)ini_close(rfp);
    (void)ini_close(wfp);
    (void)ini_remove(filename);
    (void)ini_tempname(buffer, filename, INI_BUFFERSIZE);
    (void)ini_rename(buffer, filename);
    return 1;
}

/** ini_puts()
 * \param Section         the name of the section to write the string in
 * \param Key                 the name of the entry to write, or NULL to erase all keys in the section
 * \param Value             a pointer to the buffer the string, or NULL to erase the key
 * \param Filename        the name and full path of the .ini file to write to
 *
 * \return                        1 if successful, otherwise 0
 */
int ini_puts(const TCHAR *Section, const TCHAR *Key, const TCHAR *Value, const TCHAR *Filename)
{
    INI_FILETYPE rfp;
    INI_FILETYPE wfp;
    INI_FILEPOS mark;
    TCHAR *sp, *ep;
    TCHAR LocalBuffer[INI_BUFFERSIZE];
    int len, match, flag, cachelen;

    assert(Filename != NULL);
    if (!ini_openread(Filename, &rfp)) {
        /* If the .ini file doesn't exist, make a new file */
        if (Key != NULL && Value != NULL) {
            if (!ini_openwrite(Filename, &wfp))
                return 0;
            writesection(LocalBuffer, Section, &wfp);
            writekey(LocalBuffer, Key, Value, &wfp);
            (void)ini_close(&wfp);
        } /* if */
        return 1;
    } /* if */

    /* If parameters Key and Value are valid (so this is not an "erase" request)
     * and the setting already exists and it already has the correct value, do
     * nothing. This early bail-out avoids rewriting the INI file for no reason.
     */
    if (Key != NULL && Value != NULL) {
        (void)ini_tell(&rfp, &mark);
        match = getkeystring(&rfp, Section, Key, -1, -1, LocalBuffer, sizearray(LocalBuffer));
        if (match && _tcscmp(LocalBuffer,Value) == 0) {
            (void)ini_close(&rfp);
            return 1;
        } /* if */
        /* key not found, or different value -> proceed (but rewind the input file first) */
        (void)ini_seek(&rfp, &mark);
    } /* if */

    /* Get a temporary file name to copy to. Use the existing name, but with
     * the last character set to a '~'.
     */
    ini_tempname(LocalBuffer, Filename, INI_BUFFERSIZE);
    if (!ini_openwrite(LocalBuffer, &wfp)) {
        (void)ini_close(&rfp);
        return 0;
    } /* if */
    (void)ini_tell(&rfp, &mark);
    cachelen = 0;

    /* Move through the file one line at a time until a section is
     * matched or until EOF. Copy to temp file as it is read.
     */
    len = (Section != NULL) ? _tcslen(Section) : 0;
    if (len > 0) {
        do {
            if (!ini_read(LocalBuffer, INI_BUFFERSIZE, &rfp)) {
                /* Failed to find section, so add one to the end */
                flag = cache_flush(LocalBuffer, &cachelen, &rfp, &wfp, &mark);
                if (Key!=NULL && Value!=NULL) {
                    if (!flag)
                        (void)ini_write(INI_LINETERM, &wfp);    /* force a new line behind the last line of the INI file */
                    writesection(LocalBuffer, Section, &wfp);
                    writekey(LocalBuffer, Key, Value, &wfp);
                } /* if */
                return close_rename(&rfp, &wfp, Filename, LocalBuffer);    /* clean up and rename */
            } /* if */
            /* Copy the line from source to dest, but not if this is the section that
             * we are looking for and this section must be removed
             */
            sp = skipleading(LocalBuffer);
            ep = _tcschr(sp, ']');
            match = (*sp == '[' && ep != NULL && (int)(ep-sp-1) == len && _tcsnicmp(sp + 1,Section,len) == 0);
            if (!match || Key != NULL) {
                if (!cache_accum(LocalBuffer, &cachelen, INI_BUFFERSIZE)) {
                    cache_flush(LocalBuffer, &cachelen, &rfp, &wfp, &mark);
                    (void)ini_read(LocalBuffer, INI_BUFFERSIZE, &rfp);
                    cache_accum(LocalBuffer, &cachelen, INI_BUFFERSIZE);
                } /* if */
            } /* if */
        } while (!match);
    } /* if */
    cache_flush(LocalBuffer, &cachelen, &rfp, &wfp, &mark);
    /* when deleting a section, the section head that was just found has not been
     * copied to the output file, but because this line was not "accumulated" in
     * the cache, the position in the input file was reset to the point just
     * before the section; this must now be skipped (again)
     */
    if (Key == NULL) {
        (void)ini_read(LocalBuffer, INI_BUFFERSIZE, &rfp);
        (void)ini_tell(&rfp, &mark);
    } /* if */

    /* Now that the section has been found, find the entry. Stop searching
     * upon leaving the section's area. Copy the file as it is read
     * and create an entry if one is not found.
     */
    len = (Key!=NULL) ? _tcslen(Key) : 0;
    for( ;; ) {
        if (!ini_read(LocalBuffer, INI_BUFFERSIZE, &rfp)) {
            /* EOF without an entry so make one */
            flag = cache_flush(LocalBuffer, &cachelen, &rfp, &wfp, &mark);
            if (Key!=NULL && Value!=NULL) {
                if (!flag)
                    (void)ini_write(INI_LINETERM, &wfp);    /* force a new line behind the last line of the INI file */
                writekey(LocalBuffer, Key, Value, &wfp);
            } /* if */
            return close_rename(&rfp, &wfp, Filename, LocalBuffer);    /* clean up and rename */
        } /* if */
        sp = skipleading(LocalBuffer);
        ep = _tcschr(sp, '='); /* Parse out the equal sign */
        if (ep == NULL)
            ep = _tcschr(sp, ':');
        match = (ep != NULL && (int)(skiptrailing(ep,sp)-sp) == len && _tcsnicmp(sp,Key,len) == 0);
        if ((Key != NULL && match) || *sp == '[')
            break;    /* found the key, or found a new section */
        /* copy other keys in the section */
        if (Key == NULL) {
            (void)ini_tell(&rfp, &mark);    /* we are deleting the entire section, so update the read position */
        } else {
            if (!cache_accum(LocalBuffer, &cachelen, INI_BUFFERSIZE)) {
                cache_flush(LocalBuffer, &cachelen, &rfp, &wfp, &mark);
                (void)ini_read(LocalBuffer, INI_BUFFERSIZE, &rfp);
                cache_accum(LocalBuffer, &cachelen, INI_BUFFERSIZE);
            } /* if */
        } /* if */
    } /* for */
    /* the key was found, or we just dropped on the next section (meaning that it
     * wasn't found); in both cases we need to write the key, but in the latter
     * case, we also need to write the line starting the new section after writing
     * the key
     */
    flag = (*sp == '[');
    cache_flush(LocalBuffer, &cachelen, &rfp, &wfp, &mark);
    if (Key != NULL && Value != NULL)
        writekey(LocalBuffer, Key, Value, &wfp);
    /* cache_flush() reset the "read pointer" to the start of the line with the
     * previous key or the new section; read it again (because writekey() destroyed
     * the buffer)
     */
    (void)ini_read(LocalBuffer, INI_BUFFERSIZE, &rfp);
    if (flag) {
        /* the new section heading needs to be copied to the output file */
        cache_accum(LocalBuffer, &cachelen, INI_BUFFERSIZE);
    } else {
        /* forget the old key line */
        (void)ini_tell(&rfp, &mark);
    } /* if */
    /* Copy the rest of the INI file */
    while (ini_read(LocalBuffer, INI_BUFFERSIZE, &rfp)) {
        if (!cache_accum(LocalBuffer, &cachelen, INI_BUFFERSIZE)) {
            cache_flush(LocalBuffer, &cachelen, &rfp, &wfp, &mark);
            (void)ini_read(LocalBuffer, INI_BUFFERSIZE, &rfp);
            cache_accum(LocalBuffer, &cachelen, INI_BUFFERSIZE);
        } /* if */
    } /* while */
    cache_flush(LocalBuffer, &cachelen, &rfp, &wfp, &mark);
    return close_rename(&rfp, &wfp, Filename, LocalBuffer);    /* clean up and rename */
}

/* Ansi C "itoa" based on Kernighan & Ritchie's "Ansi C" book. */
#define ABS(v)    ((v) < 0 ? -(v) : (v))

static void strreverse(TCHAR *str)
{
    TCHAR t;
    int i, j;

    for (i = 0, j = _tcslen(str) - 1; i < j; i++, j--) {
        t = str[i];
        str[i] = str[j];
        str[j] = t;
    } /* for */
}

static void long2str(long value, TCHAR *str)
{
    int i = 0;
    long sign = value;
    int n;

    /* generate digits in reverse order */
    do {
        n = (int)(value % 10);                            /* get next lowest digit */
        str[i++] = (TCHAR)(ABS(n) + '0');     /* handle case of negative digit */
    } while (value /= 10);                                /* delete the lowest digit */
    if (sign < 0)
        str[i++] = '-';
    str[i] = '\0';

    strreverse(str);
}

/** ini_putl()
 * \param Section         the name of the section to write the value in
 * \param Key                 the name of the entry to write
 * \param Value             the value to write
 * \param Filename        the name and full path of the .ini file to write to
 *
 * \return                        1 if successful, otherwise 0
 */
int ini_putl(const TCHAR *Section, const TCHAR *Key, long Value, const TCHAR *Filename)
{
    TCHAR LocalBuffer[32];
    long2str(Value, LocalBuffer);
    return ini_puts(Section, Key, LocalBuffer, Filename);
}

#if defined INI_REAL
/** ini_putf()
 * \param Section         the name of the section to write the value in
 * \param Key                 the name of the entry to write
 * \param Value             the value to write
 * \param Filename        the name and full path of the .ini file to write to
 *
 * \return                        1 if successful, otherwise 0
 */
int ini_putf(const TCHAR *Section, const TCHAR *Key, INI_REAL Value, const TCHAR *Filename)
{
    TCHAR LocalBuffer[64];
    ini_ftoa(LocalBuffer, Value);
    return ini_puts(Section, Key, LocalBuffer, Filename);
}
#endif /* INI_REAL */
#endif /* !INI_READONLY */
